Riveting apparatus.



PA'IE1\T'IT:D DEC. 10, 1907. B. WADDINGTON. RIVETING APPARATUS.

APPLICATION FILED Nov.9.19o5.

UNITED sTATEs PATENT oEEroE.

BENJAMIN WADDINGTON, OF NEW CASTLE, PENNSYLVANIA, ASSIGNOR TO LEE M. RANEY,

OF NEW CASTLE, PENNSYLVANIA.

RIVETING APPARATUS.

Nasr/3,640.

Specication of Letters Patent.

Patented Dec. 10, 1907.

To all whom it may concern.'

, Be it known that I, BENJAMIN WAD- DINGTON, of New Castle, Lawrence county, Pennsylvania, have invented a new and useful Riveting Apparatus, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this speciiication, in Which- Figure 1 is a vertical sectional view of apparatus constructed in accordance with my invention; and Fig. 2 is a perspective view of the riveting horn and its mechanism.

My invention relates to apparatus for riveting, and particularly to apparatus for riveting ears upon sheet metal vessels, though it may be employed for riveting any of the parts together.

The object of the invention is to overcome the difficulty heretofore experienced in properly positioning and holding the parts until they are riveted together, especially where one of the parts is small and difficult to handle. I overcome this di'Hiculty by providing the movable riveting die with a magnetic holding device which holds the ear or one part to be riveted during the downward stroke and until the rivets are headed. I also preferably shape the face of the reciprocating die with a recess corresponding to the shape of the ear or other part to be riveted so that when the ear is applied to this die it will take its proper position without careful adjustment by the operator.

Theinvention further consists in the construction and arrangement of the parts as hereinafter more fully described and claimed.

In the drawings, 2 represents the riveting horn, to which is secured a plate 3 in which are secured the stationary riveting dies 4, 4. These are preferably in the form of cylindrical pins, which project upwardly within holes in a spring-pressed plate 5. This plate is normally forced upwardly in the position shown by springs 6 between it and the plate 8 and is limited and guided in its movements by the pins 7 secured to it and having enlarged lower heads moving within recesses in the plate 3. The holes 9 in the spring-pressed plate above the riveting dies are preferably cylindrical and properly arranged to receive the rivets.

The reciprocating plunger is preferably provided with cylindrical riveting dies 10, 10 which are rigidly secured to it and have a xed stroke. Surrounding the outer ends of these dies is a brass plate 11 through holes in which the dies 10 extend, and to this brass plate are secured two steel plates 12, 12- preferably with a gap 13 between them. Electro-magnets 14 are provided with cores 15 screwed into or otherwise secured to the steel plates 12, and the plates 12 are preferably formed with a depression or recess corresponding to the shape of the ear 16 of the vessel. Between the brass plate 11 of the reciprocating die and the die proper- 18 is placed a rubber or other resilient packing 19 which allows the recessed plates 12 to move back when the pressure reaches a certain amount.

In using the device, the rivets are dropped into the holes 9, the vessel is properly posi` tioned on the horn, the ear is placed in the cavity of the reciprocating die where it will be held by the magnetic flux, and the upper die is then reciprocated. As -the die descends the spring-pressed plate 5 will be depressed as the ear is forced down on the vessel, until the upper ends of the stationary dies 4 are reached. In this position the rivets project up through the holes in the vessel and theear. On the further stroke the outer part of the upper plunger is forced back under the yielding of the rubber backing and the dies l() act to head the rivets. The upper die head then retracts and the vessel may be lifted off and the operations repeated.

The advantages of my invention result from the use of the magnetic device for holding the ear or part to be riveted, and also from the spring plate arrangement for the stationary dies and the recess or means for properly positioning the ear so that it will always register properly with the rivets.

Many changes may be made in the form and arrangement of the magnetic devices, which might even be a permanent magnet or magnets.

Other means may be used for positioning the ear, and the apparatus may be Widely varied for riveting other parts in other arts.

1. In a riveting a paratus, a reciprocating die head having e ectro-magnetic holding means for the part to be riveted, and a' relatively stationary die having rivet-holding means 5 substantially as described.

2. In a riveting apparatus, a reciprocating die head having an electro-magnetic holding device provided with a recess to receive a part to be riveted, and a relatively stationary die having rivet holding mechanism; sub- 5 stantially as described.

3. In riveting apparatus, a reciprocating die head having an electro-magnetic holding plate provided with a hole, a riveting die on the head movable through said hole, and a relatively stationary die head having a rivetholding device; substantially as described.

4. In riveting apparatus, a die or horn arranged to receivev a vessel and having a spring-pressed plate With holes forl rivets, a

reciprocating die, and magnetic means for holding an ear or part to be rivetedl thereto; substantially as described.

5. In riveting apparatus, a stationary die head and a movable die head, at least onev of 2O said parts having a spring-pressed plate and the other having magnetic means for holding the part to be riveted thereto; substantially as described.

6. In a riveting apparatus, a reciprocatory head having an electro-magnetic holding late provided with a hole, a yielding back or the plate, the head carrying a riveting die movable through the hole, and a relatively stationary die head; substantially as described..

'7. In a riveting apparatus, a reciprocating die head having an electro-magnetic holder comprising tWo separated plates With electric connections and a relatively stationary A die having rivet-holding means; substantially as described.

8. In a riveting apparatus, a reciprocating die head having an electro-magnetic holder comprising tWo separated plates with electric connections, said head having riveting 40 dies movable Within holes in said plates and a relatively stationary die coacting with said reciprocating die head; substantially as described.

9-. In a riveting apparatus, a reciprocating 45 die head having a magnetic holding device provided Witha hole, and a riveting die arranged tornove through said hole; substantially as described.

In testimony whereof, I have hereunto set my hand.

BENJ. WADDINGTON.

Witnesses LEE RANEY, C. L. WHITE. 

